Lubricator.



UNITED sTaTEs APATENT oEEioE.

WILLIAM O. DUNTLEY, OF CHICAGO', ILLINOIS, ASSIGNOR TO CHICAGO PNEMATICTOOL COMPANY, OI" CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

LUBRICATOR.

`Specification of Letters Patent.

Patented Sept. 24, 1907.

Application ledctober 6, 1904. Serial No. 227,477.

To all whom it may concern:

Be it known that I, WILLIAM 0. DUNTLEY, residing at Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Lubricators, of which the following is a specification".

My invention relates to lubricators and is more particularlyy intended for use in connection with pneumatic tools such as pneumatic hammers to which air vunder pressure is conducted or supplied by means of a flexible hose.

The object of my invention is to provide simple, reliable and'eiiicient means for properly lubricating the pneumatic tool or hammer or the like by automatically supplying oil to the air or other motive fiuid, and to this end and according to my present invention l arrange such means in the flexible hose or supply pipe in such manner that the oil is supplied to thel air in the form of a spray and in an automatic manner inasmuch as the supply ol' the oil is dependent upon the passageol air pressure through the hose or supply pipe, with the result that during the operation or working of the tool the oil will be supplied thereto continuously and in the best form for proper lubrication, that is, in suspension in the air. u

In the drawings, Figure l is a vertical section of my lubricator; and Fig. 2 a horizontal section thereof.

As herein shown, my lubricator comprises a body or casing l of globular or spherical forni and arranged` to be interposed at any suitable or desired point in the air supply pipe or hose (not shown) and therefore between the tool and the: source of air supply. This casing is therefore provided with inlet and outlet connections or nozzles 2 and 3 respectively, for connection -With two portions or ends of the supply pipe or hose.

Within the -casing and centrally thereof is formed or arranged an inner shell. or casingr 4 constituting an oil reservoir or chamber 5. This inner shell is preferably substantially spherical and'arranged concentricv ally oi the outer casing. By preference, these two casings 1 and 4 are cast in one piece and are therefore integral, the inner casing being in the present yinstance joined with the outer one at two points diametrically opposed. The remainder of the annular space between the two casings affords suicient space for the ow orlthe motive fluid. Access for filling the oil reservoir is had through the top opening 6 which is closed by the screw plug 7. A

The oil chamber has two diametrically opposed open- I ings 8 and 9 arranged axially of the two nozzles 2 and 3, the former one of which. is screw-threaded to receive one end oi the injector tube l0. The other'end of this tube is substantially conical and projects slightly into the opening 9 which is extended to form an injector passage and orifice by means oi the annular lip l1. The arrangementv of the parts is such that an annular i l l l l .amount of oil to be drawn from the A'reservoir in cooperating' therewitl space is formed between the opening 9 and the'end of the tube to permit the oil'to pass from the reservoir in a manner hereinafter explained. The size of this annular space is determined or adjusted in the present instan ce by screwing the tube in or out with the reslt that the injector end of the tube. is brought closer to or farther away from the sides of the opening 9.

` From the foregoing descriptiou'and an inspection of the drawing, it"l will be understood that the great volume of the pressure or motive fluid required for the Working of the.tool flows around the oil reservoir but that a small amount of such pressure flows straightway from nozzle to nozzle through the tube l0 inasmuch as the injector passage is in the direct line of ilow of the motive iluirl but. restricted as compared with the iiow oi the main body oi the motive fluid, with the result that the oil in the reservoir is drawn therefrom and forced by the jet from the tube through the injector passage. The oil is not only thus drawn from the reservoir but, by the action or' the jet, is sprayed or atomized in the 75 main body of air liowing to the tool for operating it. Consequently the oil in this suspended and linely divided or globular condition is carried to -the working parts of the tool for lubricating them.' llie amount of oil thus supplied is regulated or governed by adjusting` the injector tube in or out, to permit a greater or less i 'the manner explained.

By the employment of my lubricating device, the oil may be supplied continuously and automatically so long as the tool is working, that is, sovlong as motive fluid is iowing through the supply pipe or hose on its way to the tool to operate it. In this manner the supf ply of oil is entirely under the control of the motive fluid which draws the oil from the reservoir and con*V Veys it 'in suspended condition to the tool,'with the result that the working parts o such tool are lubricated properly and to any degree as determined by the operv ator.

I claim.' P

1. In a device of the class described, the combination of a casing arranged to be interposed in a supply .pipe for conveying motive fluid to a tool or the like and forming a part of the motive fluid conduit, and an oil reservoir arranged within -thr casing, and, having ,an injector and operated by the motive duid.

2. In a device Iof che class described, the combination of a casing arranged to be interposed in a supply pipefor conveying motive .duid to a tool orrtiie ,like and forming a part of the motive iiuid conduit/,J and an inner shell .105 arranged within the said casing and constituting an oil reservoir having an injector coperating with said reservoir and receiving its operating pressure from the said motive fluid. Y v

3. Ina device of the class described, the combination of a casing arrangedto be interposed in a supply pipe for 4conveying motive fluid to a tboi or vthe like, and an inner" shell arranged concentricallry within .said casing and having an injector coperating with said reservoir'and receiving its operating pressure from thesald motive iiuid.

4. In a device of the cluss described, .the combination of a casing arranged to be`interposed in a' suppl? pipe for conveying motive iiuld to a tool or the like, and an inner shell arranged concentricaliy Within said casing and secured thereto, leaving u shhstantiaily annular space beA tween said shell and casingfor the tree tiow of the main,

coperatingr therewith und receiving its operating,r pressure from the motive fluid.

v conveying G. In a' device of-the class described, the combination of o casing arranged to be interposed in :i supply pipe for motive iiuid to a tool or che like, and an inner shellvarranged within said casing and constituting un oil reservoir having an injector extending across the reservoir in the directY line of flow of the motive i'iuid :1nd cotipcruting with the reservoir to feed oil to the motive iluid.

7, In a device of the class described, the combination oi. a casing arranged to be interposed in n supply pipe for.

conveying motive fluid to a tool or the like, and an inner shell arranged within said casing,l and constitutingnn 'oil --reservoir provided with two dornetricolly opposite openings, und u tubo secured in one of said openings und eop'erating with the` other opening to form nn injector for supplying oii to the motive iiuid.

8. In a device of the class described, the combination of acaslng :Arranged to be interposed in a supply pipe for conveying* motive fluid to a tool or the like and i'orrninxr n part of the motive fluid conduit, :1nd an inner shell arranged within said easing and constituting un oil reservoii having un :nl i stuhle injector eoiperating with said i'eservqir :md with the motive fluid for supplying such motive uid with oil.

9. In a device or. the class described, the combination of a casing arranged to be interposed in n supply pipe for shelll in the opening' S und conveying motive iiuid to n tool or the like, nud :in inner shell arranged within sold casing und constituting :in oil reservoir having an injector' supported by and udjusiubie in said shell and coperotlng therewith and with the motive fluid for supplyingr such motive iiuid with oil.

l0. ln a device of the cluss described, the combinotion of a casing arranged to be interposed in :t supply pipe lfor conveyingl motive fluid to a tool or the like. und :in inner shell :ii-ranged within said casing and constitutiiu,r nn oli reservoir provided with nn opening H :ind :in injector openingr i), and also with a charging; opening il, :1nd bovini;

:in injector' l() supported :it onc end in opeuim.r H :ind cooperating :1t its other end with thc injector opening.

11. In a device of the class described, thc combination of o casing arranged to be interposed in :i supply pipe for conveyinrr motive iiuid to :i'iool o'r the like, un inner shell arranged within Suid t sini: und constituting :in oil roservoir provided with n scrcw-threodcri opcniiu.r .s und nn injector opening,r il, :ind with n chau-cinc opening il. und :rn injector tube iii ut one end scrcwinrY into hud adjustable :it iis other end coi'ypcruiing with the injector opening.

12. In u device of the class described. the combination of u casini.; arranged to be interposed in n supply pipil for conveying motive fluid to :it tool or thc like, nii inner shell within said casing;A :ind constituting :in oli reservoir provided wiih openinigs .s und il und with :in unuuhir lip Il :iround the opening i) io form on injector' pnsszige, und un injector tube supported in opening.: ti und coiipcruting wiih the injector opening.

iii. ln n device of the cluss described, the combination of :i casing; arranged to bc inici-posed in u supply pipe for conveying motive iiuid to n tool or the lilrc, such casing beim; substantially spherical und bovini; inlet und outlct nozzles, o. substantially spherical shell arranged within und concentric of suld casing, and un injector cxtcndhnr dinxnetricolly of said shell in axial nlinemenl with thc nozzles und cooperating with said shell which serves us nn oil reservoir. I

WILLIAM (l. DUNTLEY.

Witnesses la'. W. Pinson, W. B. Suunto. 

